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<div id="overview"><a href="../../../../../../../api/org/jboss/netty/handler/codec/http/HttpContentDecoder.html">View Javadoc</a></div><pre>

<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_comment"> * Copyright 2012 The Netty Project</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_comment"> * The Netty Project licenses this file to you under the Apache License,</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_comment"> * version 2.0 (the "License"); you may not use this file except in compliance</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_comment"> * with the License. You may obtain a copy of the License at:</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_comment"> *   <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT</em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_comment"> * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_comment"> * License for the specific language governing permissions and limitations</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_comment"> * under the License.</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  <strong class="jxr_keyword">package</strong> org.jboss.netty.handler.codec.http;
<a class="jxr_linenumber" name="17" href="#17">17</a>  
<a class="jxr_linenumber" name="18" href="#18">18</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.buffer.ChannelBuffer;
<a class="jxr_linenumber" name="19" href="#19">19</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.buffer.ChannelBuffers;
<a class="jxr_linenumber" name="20" href="#20">20</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelHandlerContext;
<a class="jxr_linenumber" name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelStateEvent;
<a class="jxr_linenumber" name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.Channels;
<a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.LifeCycleAwareChannelHandler;
<a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.MessageEvent;
<a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.SimpleChannelUpstreamHandler;
<a class="jxr_linenumber" name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.embedder.DecoderEmbedder;
<a class="jxr_linenumber" name="27" href="#27">27</a>  
<a class="jxr_linenumber" name="28" href="#28">28</a>  <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="29" href="#29">29</a>  <em class="jxr_javadoccomment"> * Decodes the content of the received {@link HttpRequest} and {@link HttpChunk}.</em>
<a class="jxr_linenumber" name="30" href="#30">30</a>  <em class="jxr_javadoccomment"> * The original content is replaced with the new content decoded by the</em>
<a class="jxr_linenumber" name="31" href="#31">31</a>  <em class="jxr_javadoccomment"> * {@link DecoderEmbedder}, which is created by {@link #newContentDecoder(String)}.</em>
<a class="jxr_linenumber" name="32" href="#32">32</a>  <em class="jxr_javadoccomment"> * Once decoding is finished, the value of the &lt;tt&gt;'Content-Encoding'&lt;/tt&gt;</em>
<a class="jxr_linenumber" name="33" href="#33">33</a>  <em class="jxr_javadoccomment"> * header is set to the target content encoding, as returned by {@link #getTargetContentEncoding(String)}.</em>
<a class="jxr_linenumber" name="34" href="#34">34</a>  <em class="jxr_javadoccomment"> * Also, the &lt;tt&gt;'Content-Length'&lt;/tt&gt; header is updated to the length of the</em>
<a class="jxr_linenumber" name="35" href="#35">35</a>  <em class="jxr_javadoccomment"> * decoded content.  If the content encoding of the original is not supported</em>
<a class="jxr_linenumber" name="36" href="#36">36</a>  <em class="jxr_javadoccomment"> * by the decoder, {@link #newContentDecoder(String)} should return {@code null}</em>
<a class="jxr_linenumber" name="37" href="#37">37</a>  <em class="jxr_javadoccomment"> * so that no decoding occurs (i.e. pass-through).</em>
<a class="jxr_linenumber" name="38" href="#38">38</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a class="jxr_linenumber" name="39" href="#39">39</a>  <em class="jxr_javadoccomment"> * Please note that this is an abstract class.  You have to extend this class</em>
<a class="jxr_linenumber" name="40" href="#40">40</a>  <em class="jxr_javadoccomment"> * and implement {@link #newContentDecoder(String)} properly to make this class</em>
<a class="jxr_linenumber" name="41" href="#41">41</a>  <em class="jxr_javadoccomment"> * functional.  For example, refer to the source code of {@link HttpContentDecompressor}.</em>
<a class="jxr_linenumber" name="42" href="#42">42</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a class="jxr_linenumber" name="43" href="#43">43</a>  <em class="jxr_javadoccomment"> * This handler must be placed after {@link HttpMessageDecoder} in the pipeline</em>
<a class="jxr_linenumber" name="44" href="#44">44</a>  <em class="jxr_javadoccomment"> * so that this handler can intercept HTTP requests after {@link HttpMessageDecoder}</em>
<a class="jxr_linenumber" name="45" href="#45">45</a>  <em class="jxr_javadoccomment"> * converts {@link ChannelBuffer}s into HTTP requests.</em>
<a class="jxr_linenumber" name="46" href="#46">46</a>  <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="47" href="#47">47</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpContentDecoder.html">HttpContentDecoder</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../../org/jboss/netty/channel/SimpleChannelUpstreamHandler.html">SimpleChannelUpstreamHandler</a>
<a class="jxr_linenumber" name="48" href="#48">48</a>                                           <strong class="jxr_keyword">implements</strong> <a href="../../../../../../org/jboss/netty/channel/LifeCycleAwareChannelHandler.html">LifeCycleAwareChannelHandler</a> {
<a class="jxr_linenumber" name="49" href="#49">49</a>  
<a class="jxr_linenumber" name="50" href="#50">50</a>      <strong class="jxr_keyword">private</strong> DecoderEmbedder&lt;ChannelBuffer&gt; decoder;
<a class="jxr_linenumber" name="51" href="#51">51</a>  
<a class="jxr_linenumber" name="52" href="#52">52</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="53" href="#53">53</a>  <em class="jxr_javadoccomment">     * Creates a new instance.</em>
<a class="jxr_linenumber" name="54" href="#54">54</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="55" href="#55">55</a>      <strong class="jxr_keyword">protected</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpContentDecoder.html">HttpContentDecoder</a>() {
<a class="jxr_linenumber" name="56" href="#56">56</a>      }
<a class="jxr_linenumber" name="57" href="#57">57</a>  
<a class="jxr_linenumber" name="58" href="#58">58</a>      @Override
<a class="jxr_linenumber" name="59" href="#59">59</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> messageReceived(<a href="../../../../../../org/jboss/netty/channel/ChannelHandlerContext.html">ChannelHandlerContext</a> ctx, <a href="../../../../../../org/jboss/netty/channel/MessageEvent.html">MessageEvent</a> e) <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="60" href="#60">60</a>          Object msg = e.getMessage();
<a class="jxr_linenumber" name="61" href="#61">61</a>          <strong class="jxr_keyword">if</strong> (msg instanceof HttpResponse &amp;&amp; ((HttpResponse) msg).getStatus().getCode() == 100) {
<a class="jxr_linenumber" name="62" href="#62">62</a>              <em class="jxr_comment">// 100-continue response must be passed through.</em>
<a class="jxr_linenumber" name="63" href="#63">63</a>              ctx.sendUpstream(e);
<a class="jxr_linenumber" name="64" href="#64">64</a>          } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (msg instanceof HttpMessage) {
<a class="jxr_linenumber" name="65" href="#65">65</a>              <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpMessage.html">HttpMessage</a> m = (HttpMessage) msg;
<a class="jxr_linenumber" name="66" href="#66">66</a>  
<a class="jxr_linenumber" name="67" href="#67">67</a>              <em class="jxr_comment">// Clean-up the previous decoder if not cleaned up correctly.</em>
<a class="jxr_linenumber" name="68" href="#68">68</a>              finishDecode();
<a class="jxr_linenumber" name="69" href="#69">69</a>  
<a class="jxr_linenumber" name="70" href="#70">70</a>              <em class="jxr_comment">// Determine the content encoding.</em>
<a class="jxr_linenumber" name="71" href="#71">71</a>              String contentEncoding = m.getHeader(HttpHeaders.Names.CONTENT_ENCODING);
<a class="jxr_linenumber" name="72" href="#72">72</a>              <strong class="jxr_keyword">if</strong> (contentEncoding != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="73" href="#73">73</a>                  contentEncoding = contentEncoding.trim();
<a class="jxr_linenumber" name="74" href="#74">74</a>              } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="75" href="#75">75</a>                  contentEncoding = HttpHeaders.Values.IDENTITY;
<a class="jxr_linenumber" name="76" href="#76">76</a>              }
<a class="jxr_linenumber" name="77" href="#77">77</a>  
<a class="jxr_linenumber" name="78" href="#78">78</a>              <strong class="jxr_keyword">boolean</strong> hasContent = m.isChunked() || m.getContent().readable();
<a class="jxr_linenumber" name="79" href="#79">79</a>              <strong class="jxr_keyword">if</strong> (hasContent &amp;&amp; (decoder = newContentDecoder(contentEncoding)) != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="80" href="#80">80</a>                  <em class="jxr_comment">// Decode the content and remove or replace the existing headers</em>
<a class="jxr_linenumber" name="81" href="#81">81</a>                  <em class="jxr_comment">// so that the message looks like a decoded message.</em>
<a class="jxr_linenumber" name="82" href="#82">82</a>                  String targetContentEncoding = getTargetContentEncoding(contentEncoding);
<a class="jxr_linenumber" name="83" href="#83">83</a>                  <strong class="jxr_keyword">if</strong> (HttpHeaders.Values.IDENTITY.equals(targetContentEncoding)) {
<a class="jxr_linenumber" name="84" href="#84">84</a>                      <em class="jxr_comment">// Do NOT set the 'Content-Encoding' header if the target encoding is 'identity'</em>
<a class="jxr_linenumber" name="85" href="#85">85</a>                      <em class="jxr_comment">// as per: http://tools.ietf.org/html/rfc2616#section-14.11</em>
<a class="jxr_linenumber" name="86" href="#86">86</a>                      m.removeHeader(HttpHeaders.Names.CONTENT_ENCODING);
<a class="jxr_linenumber" name="87" href="#87">87</a>                  } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="88" href="#88">88</a>                      m.setHeader(HttpHeaders.Names.CONTENT_ENCODING, targetContentEncoding);
<a class="jxr_linenumber" name="89" href="#89">89</a>                  }
<a class="jxr_linenumber" name="90" href="#90">90</a>  
<a class="jxr_linenumber" name="91" href="#91">91</a>                  <strong class="jxr_keyword">if</strong> (!m.isChunked()) {
<a class="jxr_linenumber" name="92" href="#92">92</a>                      <a href="../../../../../../org/jboss/netty/buffer/ChannelBuffer.html">ChannelBuffer</a> content = m.getContent();
<a class="jxr_linenumber" name="93" href="#93">93</a>                      <em class="jxr_comment">// Decode the content</em>
<a class="jxr_linenumber" name="94" href="#94">94</a>                      content = ChannelBuffers.wrappedBuffer(
<a class="jxr_linenumber" name="95" href="#95">95</a>                              decode(content), finishDecode());
<a class="jxr_linenumber" name="96" href="#96">96</a>  
<a class="jxr_linenumber" name="97" href="#97">97</a>                      <em class="jxr_comment">// Replace the content.</em>
<a class="jxr_linenumber" name="98" href="#98">98</a>                      m.setContent(content);
<a class="jxr_linenumber" name="99" href="#99">99</a>                      <strong class="jxr_keyword">if</strong> (m.containsHeader(HttpHeaders.Names.CONTENT_LENGTH)) {
<a class="jxr_linenumber" name="100" href="#100">100</a>                         m.setHeader(
<a class="jxr_linenumber" name="101" href="#101">101</a>                                 HttpHeaders.Names.CONTENT_LENGTH,
<a class="jxr_linenumber" name="102" href="#102">102</a>                                 Integer.toString(content.readableBytes()));
<a class="jxr_linenumber" name="103" href="#103">103</a>                     }
<a class="jxr_linenumber" name="104" href="#104">104</a>                 }
<a class="jxr_linenumber" name="105" href="#105">105</a>             }
<a class="jxr_linenumber" name="106" href="#106">106</a> 
<a class="jxr_linenumber" name="107" href="#107">107</a>             <em class="jxr_comment">// Because HttpMessage is a mutable object, we can simply forward the received event.</em>
<a class="jxr_linenumber" name="108" href="#108">108</a>             ctx.sendUpstream(e);
<a class="jxr_linenumber" name="109" href="#109">109</a>         } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (msg instanceof HttpChunk) {
<a class="jxr_linenumber" name="110" href="#110">110</a>             <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpChunk.html">HttpChunk</a> c = (HttpChunk) msg;
<a class="jxr_linenumber" name="111" href="#111">111</a>             <a href="../../../../../../org/jboss/netty/buffer/ChannelBuffer.html">ChannelBuffer</a> content = c.getContent();
<a class="jxr_linenumber" name="112" href="#112">112</a> 
<a class="jxr_linenumber" name="113" href="#113">113</a>             <em class="jxr_comment">// Decode the chunk if necessary.</em>
<a class="jxr_linenumber" name="114" href="#114">114</a>             <strong class="jxr_keyword">if</strong> (decoder != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="115" href="#115">115</a>                 <strong class="jxr_keyword">if</strong> (!c.isLast()) {
<a class="jxr_linenumber" name="116" href="#116">116</a>                     content = decode(content);
<a class="jxr_linenumber" name="117" href="#117">117</a>                     <strong class="jxr_keyword">if</strong> (content.readable()) {
<a class="jxr_linenumber" name="118" href="#118">118</a>                         c.setContent(content);
<a class="jxr_linenumber" name="119" href="#119">119</a>                         ctx.sendUpstream(e);
<a class="jxr_linenumber" name="120" href="#120">120</a>                     }
<a class="jxr_linenumber" name="121" href="#121">121</a>                 } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="122" href="#122">122</a>                     <a href="../../../../../../org/jboss/netty/buffer/ChannelBuffer.html">ChannelBuffer</a> lastProduct = finishDecode();
<a class="jxr_linenumber" name="123" href="#123">123</a> 
<a class="jxr_linenumber" name="124" href="#124">124</a>                     <em class="jxr_comment">// Generate an additional chunk if the decoder produced</em>
<a class="jxr_linenumber" name="125" href="#125">125</a>                     <em class="jxr_comment">// the last product on closure,</em>
<a class="jxr_linenumber" name="126" href="#126">126</a>                     <strong class="jxr_keyword">if</strong> (lastProduct.readable()) {
<a class="jxr_linenumber" name="127" href="#127">127</a>                         Channels.fireMessageReceived(
<a class="jxr_linenumber" name="128" href="#128">128</a>                                 ctx, <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/DefaultHttpChunk.html">DefaultHttpChunk</a>(lastProduct), e.getRemoteAddress());
<a class="jxr_linenumber" name="129" href="#129">129</a>                     }
<a class="jxr_linenumber" name="130" href="#130">130</a> 
<a class="jxr_linenumber" name="131" href="#131">131</a>                     <em class="jxr_comment">// Emit the last chunk.</em>
<a class="jxr_linenumber" name="132" href="#132">132</a>                     ctx.sendUpstream(e);
<a class="jxr_linenumber" name="133" href="#133">133</a>                 }
<a class="jxr_linenumber" name="134" href="#134">134</a>             } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="135" href="#135">135</a>                 ctx.sendUpstream(e);
<a class="jxr_linenumber" name="136" href="#136">136</a>             }
<a class="jxr_linenumber" name="137" href="#137">137</a>         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="138" href="#138">138</a>             ctx.sendUpstream(e);
<a class="jxr_linenumber" name="139" href="#139">139</a>         }
<a class="jxr_linenumber" name="140" href="#140">140</a>     }
<a class="jxr_linenumber" name="141" href="#141">141</a> 
<a class="jxr_linenumber" name="142" href="#142">142</a>     @Override
<a class="jxr_linenumber" name="143" href="#143">143</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> channelClosed(<a href="../../../../../../org/jboss/netty/channel/ChannelHandlerContext.html">ChannelHandlerContext</a> ctx, <a href="../../../../../../org/jboss/netty/channel/ChannelStateEvent.html">ChannelStateEvent</a> e) <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="144" href="#144">144</a>         <em class="jxr_comment">// Clean-up the previous decoder if not cleaned up correctly.</em>
<a class="jxr_linenumber" name="145" href="#145">145</a>         finishDecode();
<a class="jxr_linenumber" name="146" href="#146">146</a> 
<a class="jxr_linenumber" name="147" href="#147">147</a>         <strong class="jxr_keyword">super</strong>.channelClosed(ctx, e);
<a class="jxr_linenumber" name="148" href="#148">148</a>     }
<a class="jxr_linenumber" name="149" href="#149">149</a> 
<a class="jxr_linenumber" name="150" href="#150">150</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="151" href="#151">151</a> <em class="jxr_javadoccomment">     * Returns a new {@link DecoderEmbedder} that decodes the HTTP message</em>
<a class="jxr_linenumber" name="152" href="#152">152</a> <em class="jxr_javadoccomment">     * content encoded in the specified &lt;tt&gt;contentEncoding&lt;/tt&gt;.</em>
<a class="jxr_linenumber" name="153" href="#153">153</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="154" href="#154">154</a> <em class="jxr_javadoccomment">     * @param contentEncoding the value of the {@code "Content-Encoding"} header</em>
<a class="jxr_linenumber" name="155" href="#155">155</a> <em class="jxr_javadoccomment">     * @return a new {@link DecoderEmbedder} if the specified encoding is supported.</em>
<a class="jxr_linenumber" name="156" href="#156">156</a> <em class="jxr_javadoccomment">     *         {@code null} otherwise (alternatively, you can throw an exception</em>
<a class="jxr_linenumber" name="157" href="#157">157</a> <em class="jxr_javadoccomment">     *         to block unknown encoding).</em>
<a class="jxr_linenumber" name="158" href="#158">158</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="159" href="#159">159</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">abstract</strong> DecoderEmbedder&lt;ChannelBuffer&gt; newContentDecoder(String contentEncoding) <strong class="jxr_keyword">throws</strong> Exception;
<a class="jxr_linenumber" name="160" href="#160">160</a> 
<a class="jxr_linenumber" name="161" href="#161">161</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="162" href="#162">162</a> <em class="jxr_javadoccomment">     * Returns the expected content encoding of the decoded content.</em>
<a class="jxr_linenumber" name="163" href="#163">163</a> <em class="jxr_javadoccomment">     * This method returns {@code "identity"} by default, which is the case for</em>
<a class="jxr_linenumber" name="164" href="#164">164</a> <em class="jxr_javadoccomment">     * most decoders.</em>
<a class="jxr_linenumber" name="165" href="#165">165</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="166" href="#166">166</a> <em class="jxr_javadoccomment">     * @param contentEncoding the value of the {@code "Content-Encoding"} header</em>
<a class="jxr_linenumber" name="167" href="#167">167</a> <em class="jxr_javadoccomment">     * @return the expected content encoding of the new content</em>
<a class="jxr_linenumber" name="168" href="#168">168</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="169" href="#169">169</a>     <strong class="jxr_keyword">protected</strong> String getTargetContentEncoding(String contentEncoding) <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="170" href="#170">170</a>         <strong class="jxr_keyword">return</strong> HttpHeaders.Values.IDENTITY;
<a class="jxr_linenumber" name="171" href="#171">171</a>     }
<a class="jxr_linenumber" name="172" href="#172">172</a> 
<a class="jxr_linenumber" name="173" href="#173">173</a>     <strong class="jxr_keyword">private</strong> <a href="../../../../../../org/jboss/netty/buffer/ChannelBuffer.html">ChannelBuffer</a> decode(<a href="../../../../../../org/jboss/netty/buffer/ChannelBuffer.html">ChannelBuffer</a> buf) {
<a class="jxr_linenumber" name="174" href="#174">174</a>         decoder.offer(buf);
<a class="jxr_linenumber" name="175" href="#175">175</a>         <strong class="jxr_keyword">return</strong> ChannelBuffers.wrappedBuffer(decoder.pollAll(<strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/buffer/ChannelBuffer.html">ChannelBuffer</a>[decoder.size()]));
<a class="jxr_linenumber" name="176" href="#176">176</a>     }
<a class="jxr_linenumber" name="177" href="#177">177</a> 
<a class="jxr_linenumber" name="178" href="#178">178</a>     <strong class="jxr_keyword">private</strong> <a href="../../../../../../org/jboss/netty/buffer/ChannelBuffer.html">ChannelBuffer</a> finishDecode() {
<a class="jxr_linenumber" name="179" href="#179">179</a>         <strong class="jxr_keyword">if</strong> (decoder == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="180" href="#180">180</a>             <strong class="jxr_keyword">return</strong> ChannelBuffers.EMPTY_BUFFER;
<a class="jxr_linenumber" name="181" href="#181">181</a>         }
<a class="jxr_linenumber" name="182" href="#182">182</a> 
<a class="jxr_linenumber" name="183" href="#183">183</a>         <a href="../../../../../../org/jboss/netty/buffer/ChannelBuffer.html">ChannelBuffer</a> result;
<a class="jxr_linenumber" name="184" href="#184">184</a>         <strong class="jxr_keyword">if</strong> (decoder.finish()) {
<a class="jxr_linenumber" name="185" href="#185">185</a>             result = ChannelBuffers.wrappedBuffer(decoder.pollAll(<strong class="jxr_keyword">new</strong> <a href="../../../../../../org/jboss/netty/buffer/ChannelBuffer.html">ChannelBuffer</a>[decoder.size()]));
<a class="jxr_linenumber" name="186" href="#186">186</a>         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="187" href="#187">187</a>             result = ChannelBuffers.EMPTY_BUFFER;
<a class="jxr_linenumber" name="188" href="#188">188</a>         }
<a class="jxr_linenumber" name="189" href="#189">189</a>         decoder = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="190" href="#190">190</a>         <strong class="jxr_keyword">return</strong> result;
<a class="jxr_linenumber" name="191" href="#191">191</a>     }
<a class="jxr_linenumber" name="192" href="#192">192</a> 
<a class="jxr_linenumber" name="193" href="#193">193</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> beforeAdd(<a href="../../../../../../org/jboss/netty/channel/ChannelHandlerContext.html">ChannelHandlerContext</a> ctx) <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="194" href="#194">194</a>         <em class="jxr_comment">// NOOP</em>
<a class="jxr_linenumber" name="195" href="#195">195</a>     }
<a class="jxr_linenumber" name="196" href="#196">196</a> 
<a class="jxr_linenumber" name="197" href="#197">197</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> afterAdd(<a href="../../../../../../org/jboss/netty/channel/ChannelHandlerContext.html">ChannelHandlerContext</a> ctx) <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="198" href="#198">198</a>         <em class="jxr_comment">// NOOP</em>
<a class="jxr_linenumber" name="199" href="#199">199</a>     }
<a class="jxr_linenumber" name="200" href="#200">200</a> 
<a class="jxr_linenumber" name="201" href="#201">201</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> beforeRemove(<a href="../../../../../../org/jboss/netty/channel/ChannelHandlerContext.html">ChannelHandlerContext</a> ctx) <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="202" href="#202">202</a>         <em class="jxr_comment">// NOOP</em>
<a class="jxr_linenumber" name="203" href="#203">203</a>     }
<a class="jxr_linenumber" name="204" href="#204">204</a> 
<a class="jxr_linenumber" name="205" href="#205">205</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> afterRemove(<a href="../../../../../../org/jboss/netty/channel/ChannelHandlerContext.html">ChannelHandlerContext</a> ctx) <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="206" href="#206">206</a>         finishDecode();
<a class="jxr_linenumber" name="207" href="#207">207</a>     }
<a class="jxr_linenumber" name="208" href="#208">208</a> }
</pre>
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